I have a column called table_date which currently I am using now() to insert the current date (2011-02-23). I know I can manipulate this with sql/php to show me year and monthname. However, I want to know if it's possible to just insert into table_date the current date as year-month like this 2011-02? Thanks
A DATE field is always going to be a full date, and as far as I know, it is also always required to specify a full date.
It might be easiest to use 01, like 2011-02-01 for February 2011.
Obviously, you can format the output of a DATE field to your liking when querying it:
SELECT DATE_FORMAT(fieldname,"%Y-%m");
If you insert something like 2010-10 into a DATE column, mysql throws a warning and inserts 0000-00-00. If you do not want to specify a certain day, you can insert something like 2010-10-00. Pay attention when querying for "all entries in October 2010" since WHERE date >= '2010-10-01' will not return 2010-10-00.
Related
Hi I want to insert a data into table with the date today with a specific date format. My date in column is set to like dd-mm-yyyy but i want to insert a date in literal form like 28 October 2016
I know how to insert the current date today and also know how to select date with specific format but I'm having a little confusion with combining this two queries
For inserting current date:
INSERT INTO product_table(product_names, product_type,product_brand,product_price,product_count,product_note, product_date) VALUES ('Logitech','Mouse','Sample',100,5,'1 year warranty',CURRENT_DATE)
For selecting with specific date format
Select DATE_FORMAT(product_date, %d %M %Y) from product_table;
Thank you
If you want to store a date in a column as 28 October 2016, you'll need to make it a VARCHAR field or something.
If that's the case, I don't why you'd want to insert it like that, rather than just format it on the way out of the database?
I have a database table that has fields as such :
TIME(Datetime) Update_ID
2013-11-25 05:00:14 XC3
2013-11-25 06:00:13 XC4
2013-11-25 06:00:19 XC5
2013-12-25 23:00:14 XC6
2013-12-25 24:00:00 XC7
So assuming i want to find a trend on the updates to know which period of the day has the a particular number of updates, what i initially think of is doing something like this :
SELECT COUNT(TIME) FROM table WHERE TIME between '06:00:00' and '12:00:00'
But this doesn't work because i think since the date is not added with the time, a default value for date is added(some date around 1970). If, i add the beginning and enddate in my query, i am afraid it won't give me the results i need.
Use
WHERE HOUR(TIME)...GROUP BY DAY(TIME)
in case you have more than 1 day
You are correct, the problem is that when you do not specify the date, a default one is added.
You can use the EXTRACT function to extract the time from a date, like this:
SELECT COUNT(*)
FROM mytable
WHERE EXTRACT(HOUR_SECOND from TIME) between 60000 and 120000
Note that the time portion in the condition is specified in a different format - i.e. as numbers, without colons and quotes.
Demo on SqlFiddle.
I have a field in my table called created_date. The date format is 2010-02-28. I just wondering is it possible to do a mysql statement, only return the day instead of the entire date. eg. 28
SELECT
day(created_date)
FROM
table
This above query throw me error, is there a way i can do similar stuff?
cheers
Use MySQL built-in function called DAYOFMONTH
mysql> SELECT DAYOFMONTH('2007-02-03');
-> 3
DAYOFMONTH()
From Docs,
Returns the day of the month for date, in the range 1 to 31, or 0 for
dates such as '0000-00-00' or '2008-00-00' that have a zero day part.
MySql EXTRACT function extracts day, month or year from a given date.
select extract(day from created_date) as created_day from table
you can fetch the whole date in your format and display only the required field that is date by using this
date("j", strtotime(date('Y-m-d')) );
I would like to store in my table a full date: year, month, day, hour, minute.
Using the date type is limiting me to year month and day only.
What should I do? I have to mention that I will select records from the db order by the full date so storing the hour and minute seperatly as strings might be a problem right?
You may use DATETIME instead of DATE.
Took me a while to figure this out but to change it in MySQL you have to go to the column that you are looking to change in structure. Change the Type column from DATE to DATETIME.
[MySQL/PHP] My table has a date column of datetime format. All records are of the YYYY-MM-DD HH:MM:SS variety.
MySQL queries like SELECT record FROM table WHERE date > '1941' AND date < '1945' work nicely.
MySQL queries like SELECT record FROM table WHERE date > '1941-03-01' AND date < '1945-01-30' also work nicely.
But what about if I wanted all records that were filed in March, regardless of year? Or all records filed on the 17th, regardless of month/year?
``SELECT record FROM table WHERE date = '03'` clearly doesn't work.
I know I could snag it with a LIKE '%-03-%' parameter, but that doesn't leave room for me to search for range, like all records from March to May.
Help? :-)
Try WHERE MONTH(DATE(`date`)) BETWEEN '03' AND '05'
The DATE() part is to extract the date from the timestamp to be used with MONTH().
You can use MySQL date functions:
SELECT record FROM table WHERE MONTH(date) = 3
SELECT record FROM table WHERE DAY(date) = 17
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html
If you look at http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html, you will find many useful functions for your purpose.
... WHERE MONTH(date) = 3, e.g. =)